This is a May 24 photo provided by G. A. Septon of 'Eclipse,' a peregrine falcon, outside the water treatment building at We Energies Oak Creek Power Plant in Oak Creek. (AP Photo/G.A. Septon)

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PAUL SMITH, Milwaukee Journal Sentinel

The bird had found its way into a water treatment building at the WE Energies Oak Creek Power Plant. Perched in the building's rafters, the bird had shown no inclination to fly down and out open doors.

"They're basically trapped once they get inside," said Greg Septon of Muskego, one of the nation's leading falcon researchers. ...